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我厂生产的压力容器,其筒体部分是用4～5mm厚的1Cr18Ni9Ti钢板卷制成直径为400～600mm,经纵缝焊接而成的。筒身长约3～4m,需由几节筒体经环缝焊接而成。过去我厂采用手工电弧焊双面焊的方法进行焊接时,焊工要钻到筒体里面去焊。由于筒体直径小,使操作非常困难,尤其是在焊环焊缝时,每焊一条环焊缝,焊工都要进出筒体多次。在进行盖面焊前,还要用手工磨出坡口,
I plant the pressure vessel, the cylinder part is 4 ~ 5mm thick 1Cr18Ni9Ti steel roll diameter of 400 ~ 600mm, welded by the longitudinal seam. Drum length of about 3 ~ 4m, required by a few sections of cylinder welded by girth. In the past I used manual arc welding method of double-sided welding, the welder to drill into the cylinder inside to welding. Due to the small diameter of the cylinder, the operation is very difficult, especially in the welding seam welds, each welding a girth weld, welders have to enter the cylinder several times. Before the cover welding, but also manually grinding out of the groove,